code: def test_stemmer_does_not_remove_short_words(app):
      app.build(force_all=True)
      searchindex = (app.outdir / "searchindex.js").read_text(
          encoding="utf8"
      )
      assert "bat" in searchindex
  
imports: import json
  import warnings
  from io import BytesIO
  import pytest
  from docutils import frontend, utils
  from docutils.parsers import rst
  from sphinx.search import IndexBuilder
label_desc: Use image node_id 7 for calling a global function with example usage: test_stemmer_does_not_remove_short_words(app) without return types